Cracking Caused by Heat
High summer temperatures aren’t just uncomfortable for residents—they can also create conditions that lead to drywall cracking. If you notice any cracks or splits across your drywall, determine if the extreme temperature outdoors is causing the structure to expand.
Drywall expands in extreme heat and contracts when temperatures cool, a process known as thermal expansion and contraction. Repeated cycles of this expansion and contraction can weaken the material over time, resulting in hairline cracks or larger fissures.
Even without high levels of humidity, dry heat can also pose an issue for drywall. When humidity drops during heat waves, the lack of moisture can cause drywall paper to shrink. This exposes joints and increases the risk of cracks.
When left unchecked, drywall cracks can escalate from a cosmetic problem to one that compromises the strength of walls, ceilings, and adjoining materials. Even subtle cracking can allow pests or moisture to enter, which further degrades your interior environment. If you notice any cracks along your drywall, address these concerns immediately before they result in expensive repairs and hazardous conditions.
Warping and Bloating From High Humidity
Summer heat and humidity can affect your drywall
by creating warped or bloated surfaces. These forms of distortion are unsightly and can disrupt the functionality of neighboring structures such as windows or doors.
During humid summers, condensation builds on the surfaces of your drywall. This moisture slowly seeps into the gypsum core, which causes it to soften and warp. Warping typically begins near edges or seams and spreads, creating uneven surfaces over time.
Bloating occurs when drywall absorbs excessive moisture and begins to swell. Signs include slight bulges or soft spots on your walls, which may worsen as humidity continues to affect the material. Inspect your walls frequently, since early identification will prevent larger issues from developing.
Warped or bloated drywall often impacts nearby structures, such as doorframes, window casings, or flooring. For example, a warped wall may misalign door hinges and force them to stick or swing unevenly. You may eventually have to replace the entirety of the drywall, so catch these signs of damage early to fix these issues before they get worse.
Mold Growth and Excess Moisture
Mold can affect the structure of any home, especially in houses constructed with drywall. High humidity levels can invite mold into your home and create hazardous conditions for residents. If you notice mold growth around your drywall, contact a specialist immediately for support.
Drywall’s porous nature provides the perfect environment for mold spores to settle and thrive. When exposed to moisture, the gypsum core becomes a breeding ground for mold, especially in dark, poorly ventilated areas such as basements.
Mold releases allergens, irritants, and in some cases, toxic substances that can cause respiratory problems, skin irritation, and other health issues. Mold exposure can be particularly harmful for children, seniors, and those with preexisting health conditions.
Keeping indoor humidity levels below fifty percent using dehumidifiers, and improving ventilation are just a few steps homeowners can take to minimize mold risks. Rapid removal of water-damaged drywall, combined with professional treatment, can prevent spores from spreading further.
